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Continue to ChatJOUCOMATIC 4485003650 - 40mm Bore, 50mm Stroke, STBB40A0PB50DM, Series 448 Rodless Band Cylinders Rollers With Passive Brake https://www.valves-direct.com/product/joucomatic-4485003650-40mm-bore-50mm-stroke-stbb40a0pb50dm-series-448-rodless-band-cylinders-rollers-with-passive-brake/